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Old 05-29-2011, 12:26 PM
BrianCostello's Avatar
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Join Date: May 2005
Location: Boston
Posts: 198
frozen A/C compressor. . now what

Well now that summer has arrived in New England I decided to turn the A/C on in the 1987 300D.

It was working great last summer. . .this weekend not so much.

I notice that the compressor was not engaging, so after a little search here I start to check out the KILMA relay.

I decided to jump pins #5 and #7 to force the compressor to run (and find out if I had a bad compressor or bad kilma)

Doing so the compressor froze up immediatly . . .and snapped the serp. belt.

So I now need a new compressor, and am looking for the proper replacement procedure. and suggestions on what else to test (besides freon levels of course) to make sure that I don't destroy the soon to be installed new compressor.

The car is already 134a.

Brian
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